Lithium Ion Battery
Electrode Observation

Print

An observation of a cross section and surface of an electrode sheet gives varied information.
Commercially available batteries were disassembled and observed. Cross sections of a positive electrode gave information on the shape and size of the active substances. An observation of the negative electrode surface also provided information on the presence or non-presence of additives in addition to the shape of the active substances, among other things.

Cross sections were prepared by ion trimming. As a result of element analysis, it was found that Battery A used LiCoO2, and Battery B used LiCo1-x-yNixMnyO2.

  • Particles (white) were detected by SEM backscattered electron image in the negative electrode of Battery C. These particles were subjected to electron analysis, and silicon and oxygen were detected.
  • From this, it was found that silicon oxide capable of absorbing lithium more had been added.

Search Number 9027

Download The Technical Note of This Exapmle.

Contact Us

Inquiries Through Our Website